Dominik Tiefenthaler

In 2018, Tiefenthaler played the role of the Janitor in The Lehman Trilogy at the Lyttelton Theatre of the Royal National Theatre in London. The production starred Simon Russell Beale, Ben Miles and Adam Godley and was directed by Sam Mendes. Tiefenthaler also understudied the role of Emanuel Lehman (played by Ben Miles).[12] In August 2019, after The Lehman Trilogy had moved to the Piccadilly Theatre in the London West End, Tiefenthaler took over the role of Emanuel from Ben Miles and finished the last four weeks of the run alongside Simon Russell Beale and Adam Godley.[13]

In 2010, Tiefenthaler portrayed Swiss detective Yan Glassey, the lead investigator of the infamous Pink Panthers, an international gang of jewelry thieves[14], in an episode of America's Most Wanted.

After shooting the film Lenßen – Der Film,[15] for the German TV station Sat.1 (primetime television premiere on January 8, 2011),[16] Tiefenthaler returned to the United States to shoot Gossip Girl, where he played Lucien, the royal liaison to Louis Grimaldi.[1]

In the following years, he played mostly guest-star characters, among them on CBS's The Good Wife ("Je Ne Sais What?"),[2] Person of Interest ("Relevance"),[3] Blue Bloods ("Worst Case Scenario"),[4] and NYC 22 ("Self Cleaning Oven"),[17] NBC's The Blacklist ("The Good Samaritan"),[5] abc's Zero Hour ("Chain") (opposite Anthony Edwards),[18] and HBO's Boardwalk Empire ("All In").[6]

In 2014, Tiefenthaler was seen in three film projects: Guillaume Canet's 1970s crime drama Blood Ties,[19] The Projectionist (a thriller about PTSD), and Maybe Tomorrow,[20] for which he won Best Supporting Actor at the "Golden Door International Film Festival".[21]

In March 2016, it was announced that Tiefenthaler was cast as Detective Walti Merian, in the new eight-part British drama Paranoid. The series was commissioned by ITV and produced by StudioCanal's British production company Red Production Company.[22][23] Netflix will serve as a co-producer on the series, and will stream the series worldwide outside the UK.[24]